Abstract
A new analyzing system for the laser Doppler velocimeter is proposed and constructed by employing the period-measuring method and inversing ROM. Its characteristics and accuracy are discussed in detail. Since it has a sufficiently high sampling rate compared with other analyzing systems, a lot of data can be easily accumulated in short time. These data are stored into the IC memory in a form of the probability density function of beat frequency or period, from which the mean flow velocity can be obtained with high accuracy. A combination of this system with a laser Doppler microscope makes it possible to measure the pulsated blood flow in arteriol. An example of measurement, in vivo, of pulsating blood flow in arteriol with a diameter of about 40μm on the memblance in web of a frog is shown to assure the usefulness of the present system constructed.
